<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>WebSocket客户端</title>
</head>
<body>
    <script type="text/javascript">
        var socket;
        if(window.WebSocket){
            socket=new WebSocket("ws://localhost:8899/ws");

            socket.onmessage = function (event) {
                var ta = document.getElementById("responseText");
                ta.value=ta.value +"\n" + event.data;
            }
            socket.onopen=function (event) {
                var ta = document.getElementById("responseText");
                ta.value="连接开启！";
            }
            socket.onclose = function (event) {
                var ta = document.getElementById("responseText");
                ta.value = ta.value +"\n" +"连接关闭！";
            }

        }else{
            alert("浏览器不支持WebSocket！")
        }
        function send(message) {
            if(!window.WebSocket){
                return;
            }
            if(socket.readyState==WebSocket.OPEN){
                socket.send(message);
            }else{
                alert("连接尚未开启！");
            }


        }

    </script>

    <form onsubmit="return false;">
        <textarea name="message" style="width:400px;height:200px"></textarea>

            <input type="button" value="发送数据" onclick="send(this.form.message.value)">
        <h3>服务端输出：</h3>

        <textarea id="responseText" style="width:400px;height: 300px;"></textarea>

        <input type="button" onclick="javascript:document.getElementById('responseText').value=''" value="清空内容">
    </form>
</body>
</html>